Winter Solstice Is Approaching: What To Know About Shortest Day Of Year
The 2025 winter solstice, occurring on December 21 at 10:03 a.m. EST, marks the shortest day and longest night of the year as the Northern Hemisphere is tilted farthest from the Sun. Due to this axial tilt, cities like Miami and Los Angeles will experience a loss of three to four hours of daylight, while New York City and Chicago will see about six hours less, and Seattle, Portland, and Minneapolis will suffer a seven-hour reduction. Although meteorologists recognize December 1 as the official start of winter, astronomical winter begins with the solstice. This astronomical event underscores the seasonal changes in daylight, a phenomenon that has been ongoing since June. Looking ahead, the varying daylight hours have implications for activities and lifestyles across regions as people adjust to longer nights.
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The winter solstice in 2025 is set for December 21 at 10:03 a.m. EST, indicating the moment when the Northern Hemisphere is most tilted away from the Sun.
Cities such as Miami, Los Angeles, Atlanta, and Houston will experience a reduction of three to four hours of daylight on this day, while New York City and Chicago will lose about six hours.
Seattle, Portland, and Minneapolis will see around a seven-hour decrease in daylight, highlighting the geographical impact of the solstice.
The exact date of the winter solstice can vary slightly each year due to Earth's orbital timing, which also explains the occurrence of leap years.
While meteorologists and climatologists define the start of winter as December 1 for record-keeping, the astronomical calendar marks winter's onset with the solstice.
Earth's axial tilt of 23.5 degrees results in the Northern Hemisphere receiving the least direct sunlight during the solstice, while the Southern Hemisphere enjoys the most.
As daylight hours continue to diminish since June, this seasonal shift affects daily life and activities, prompting adjustments in routines and behaviors.